I thought that when you bought something you gave the person money and they gave you some money back. Always. No concept of making change. Or checks and credit cards for that matter.
A childhood belief about work

others believed things like this
- I saw my mom get change back and thought that the store gave you money so you could buy from them again.Anon
- I used to believe that checks and credit cards allowed you to get anything you wanted with out paying for it. — Diamond
- that people in shops gave you 'change' if you didn't quite have enough money to pay.— suzy
- i thought an ATM machine was something which gave free money!!— Armani
- that the money I gave at sunday school would go straight to God.— christine
- I used to believe that banks were owned by rich people who gave away their money.— Lyssa